Hello, I got myself a Honda 125E. Been riding awhile now and I have a few questions. My bike has low frequency vibrations after 60km/hr, it is felt on the handle bar and fuel tank. Is this normal ? I was thinking of installing air cushion grips, what is the grip size for 125E? Any other changes that can help me reduce the vibration ? (anti vibration pad on fuel tank?) oh What is the size for the engine oil drain pluck ?